Chair-iron.



A. L. MORSELL.

CHAIR IRON. APPLICATION F|L ED SEPT. 28, 1912.

1,1 84,483. Patented May 23, 1916.

" I-1B COLUMBIA PLANOGRAPH c0., WASHIN TON, D. c.

ARTHUR L. MOB/SELL, 0F MILWAUKEE, WISCONSIN.

CHAIR-IRON.

Specification of Letters Patent.

Patented May 23, 1916.

Application filed September 28, 1912. Serial No. 722,877.

To all whom it may concern:

Be it known that I, ARTHUR L. MORSELL, a citizen of the United States,and resident of Milwaukee, in the county of Milwaukee and State oflVisconsin, have invented new and useful Improvements in Chair-Irons, ofwhich the following is a description, reference being had to theaccompanying drawlugs, which are a part of this specification.

My invention has relation to improvements in chair irons, of the typeknown as adjustable chair irons, wherein provision is made for adjustingthe vertical height of the chair iron spindle, and for locking thespindle in its adjusted position.

The invention particularly relates to certain improvements upon the formof chair iron covered by my United States Letters Patent No. 699,889,dated May 13, 1902. In. the chair iron covered by this patent a lookingmember is employed, which is carried by a revoluble member, and saidlocking member, under one adjustment thereof, is adapted to preventrotation of the spindle in the revoluble member, and under anotheradjustment is adapted to unlock the revoluble member from the spindleand lock the same to the hub, one of said adjustments permitting thespindle to rotate Without raising or lowering the same, and the other ofsaid adjustments permitting of the vertical adjustment of the spindle.In this construction the locking member is permanently pivotallyconnected to the revoluble member, thereby necessitating the employ- Iment of a separate pivot pin, and the work of permanently connecting theparts together.

It is the primary object of the present.

invention not only to dispense with the necessity of employing aseparate pivot pin for the locking member, but furthermore to soconstruct the parts that the revoluble member and the locking member maybe cast, thus greatly simplifying the mechani-- cal structure and alsothe expense of manufacture.

In the accompanying drawing, Figure 1 is a vertical sectional view ofthe improved chair iron, the revoluble portion of the iron being shownlocked to the spindle to provide for rotating the spindle withoutchanging the vertical height of said spindle; and Fig.

2 is a horizontal sectional view on the line p 2 2 of Fig. 1.

1 Referring to the drawing, the numeral 3 indicates the hub of theimproved chair lI'OIl, which is provided with a plain or unthreaded bore4, and with the usual leg attaching means. 7

The numeral 5 indicates the chair iron spindle, which is rigidlyconnected to and depends from the usual spider. This spindle isscrew-threaded exteriorly and is provided with a longitudinal groove orrecess 6. The spindle enters the smooth bore of the hub.

A revoluble member 7 is provided and this revoluble member surrounds thespindle and is interiorly threaded to engage the exterior threads of thespindle. This revoluble member may be of any desired form, preferably ofring form, and medially is provided with a surrounding shoulder 8 whichseats itself upon the top of the hub.

A sleeve portion 9 extends downwardly from the shoulder of the revolublemember and enters the enlarged upper end 10 of the bore of the hub. Thissleeve is provided with an annular recess 11 which receives a screw 12turned through the hub, the said screw serving to permit rotation of therevoluble member, while yet preventing upwardwithdrawal thereof fromwithin the hub.

At one point the revoluble member is provided with a slot 13, which slotextends from the upper end of said revoluble member downwardly to justbelow the shoulder 8. On one side of the slot the revoluble member isprovided with an outward projection l4, and on the under side of thisprojection is formed a transverse recess 15 which leads to orcommunicates with the slot 13.

It will be evident from the foregoing de scription of the revolublemember that this entire member can be cast, and the only machine workwhich is necessary in connection therewith is the cutting of theinterior threads thereof.

The locking member or dog consists of a locking head 16 which fits inthe slot 13, a portion 17 extending at right angles to the head or dogand fitting in the recess 15 of projection 14, and a handle portion, onemember 18 thereof extending at right angles to the member 17, and theother hand grasp ortion 19 thereof extending at right angles to theportion 18. It will be evident that this entire locking device,consisting of the three portions mentioned, can be cast in one piece.

In assembling the parts together, all that is necessary to be done is toadjust theportion 17 of the locking member to the groove or recess 15 onthe under side of projection 14 of the revoluble member. The revolublemember is then seated upon the top of the hub with its sleeve portionextending into the bore of the hub. The screw 12 is then turned throughthe hub and into the recess 11 of the sleeve. The next step is to turnthe spindle into and through the revoluble member and its sleeve. Whenthe revoluble member is thus seated and held upon the top of the hub, itwill be evident that the locking memberis securely held in place, theportion 17 thereof being confined in its recess 15, between the underside of the projection 14 and the top of the hub. It will also beevident that these parts, 2'. 6., the revoluble member and the lockingmember, are thus connected together without the necessity of employingany separate pivot pin, as is usual.

The top of the hub is provided with one or more stops, preferably in theform of recesses 20. Y

In the use of the device, when it is desired to lock the revolublemember to the spindle, so as to provide for the revoluble member and thespindle rotating together, without any change in the vertical adjustmentof the spindle, the locking head of the locking member is turnedinwardly so as to cause the edge 21 thereof to extend through the slot13 of the revoluble member and engage the longitudinal groove 6 ofthespindle. When, however, it is desired to change the vertical heightof the spindle, so as to adjust the height of the chair seat, thelocking head is turned outwardly so as to cause a shoulder 22, formed onthe looking head, to rest on top of the hub. The spindle and revolublemember are now turned slightly together until the shoulder 22 comes overone of the recesses 20 of the hub. When this occurs the locking head bygravity will automatically drop into engagement with the recess and thuslock the revoluble member to the hub and permit independent turning ofthe spindle within the revoluble member so as to raise or lower saidspindle in accordance with the direc- 7 tion of turning of the same.

It will furthermore be evident that the flipping of the locking head canbe accomplished while a person is occupying the chairseat, simply byextending the hand beneath the seat and grasping the handle of thelocking member. After this is done the dog or looking head will dropinto one of the recesses 20 or into the longitudinal recess 6 of thespindle, as the case may be,

the moment the locking head is brought into register with either throughthe further turning of the chair seat, and while a person still occupiessaid seat.

WVhat I claim is:

1. A locking means for an adjustable chair iron having a hub portion anda spindle, comprising a revoluble member provided with a bore throughwhich the said spindle is adapted to extend, locking means movablyconfined between the revoluble member and the hub and freely removablemeans, and permitting of the raising or lowering of the spindle, underthe other 2LCl]LlSt-.

ment of the locking means; 7

2. A locking means for an ad ustable chair having a hub portion providedwith engaging means, and a longitudinally grooved spindle, comprisingrevoluble member provided with a bore through which the said spindle isadapted to extend, locking means movably confined between the revolublemember and the huband freely removable from' its confined position, whenthe revoluble member is disconnected and raised from the hub, saidlocking means, under one adjustment thereof, adapted to engage thelongitudinal groove of the spindle to thereby lock the revoluble memberto the spindle, and underanother adjustment thereof to engage theengaging means of the hub, and thereby lockthe revoluble member to thehub, and means constructed to permit of the spindle rotating withoutraising or lowering the 1 same, under one of said adjustments of thelocking means, and permitting of the raising or lowering ofthe spindleunder the other adjustment of the locking means.

3. A locking means for an adjustable chair iron having a hub portion anda spindle, comprising a revoluble member provided with a bore throughwhich the said spindle is adapted to extend, a locking means consistingof a locking head removably mounted in the revoluble member and havingan intermediate transverse portion adapted to be turned by hand, saidintermediate portion being confined between the revoluble member and thehub and having a free turning or rocking motion therebetween, and freelyremovable from its confined position, when the revoluble memberisdisconnected and raised from the hub, said locking head, under oneadjustment thereof, adapted to lock the revoluble member to the spindle,

and under antther adjustment thereof to lock the said revoluble memberto the hub, and means permitting of the spindle rotating without raisingor lowering the same, under one of said adjustments of the looking head,and permitting of the raising or lowering of the spindle on the otheradjustment of the locking head.

el. A locking means for an adjustable chair iron having a hub portionprovided with engaging means, and a longitudinally grooved spindle,comprising a revoluble member provided with a bore through which thespindle is adapted to extend, a locking means consisting of a lockingmember removably mounted in the revoluble member, and having anintermediate transverse portion adapted to be turned by hand, saidintermediate portion being confined between the revoluble member and thehub and having a free turning or rocking motion there between, andfreely removable from its con fined position, when the revoluble memberis disconnected and raised from the hub, said locking means, under oneadjustment thereof, to engage the groove of the spindle, and therebylock the revoluble member to the spindle, and under another adjustmentthereof, to engage the engaging means of the hub, and thereby lock therevoluble membet to the hub, and means constructed to permit of thespindle rotating without raising or lowering the same under one of saidadjustments of the locking means, and the permitting of the raising andlowering of the spindle on the other adjustment of the locking means.

5. The combination of a hub provided with lock engaging means, athreaded spindle provided with a longitudinal groove, an interiorlythreaded revoluble member on the hub and detachably connected to thehub, and through which the spindle passes and has threaded engagementtherewith, said revoluble member provided with a slot extending adesired distance thereof, and looking means consisting of a lockinghead, an intermediate member and a handleportion, said locking memberadapted to work through the slot of the revoluble member, and saidintermediate member confined between the revoluble member and the hub,to permit of the free removal of the locking means when the revolublemember is disconnected and raised upwardly from the hub, the head ofsaid locking means adapted to engage the longitudinal groove of thespindle and lock the revoluble member to the spindle under oneadjustment of said locking means, and thereby prevent independentrotation of the spindle in said revoluble member, and under anotheradjustment of said locking means to disengage the locking head from thegroove of the spindle and thereby unlock the revoluble member from thespindle and en-" gage the engaging means of the hub, to thereby lock therevoluble member to the hub, one of said adjustments permitting of thespindle rotating without raising or lowering the same, and the other ofsaid adjustments permitting of the vertical adjustment of the spindle.

(3. The combination of a hub having a plain or unthreaded bore, athreaded spindle provided with a longitudinal groove, an interiorlythreaded revoluble member 011 the hub and detachably connected thereto,and through which revoluble member the spindle passes and has threadedengagement there with, said revoluble member provided with a slotextending a desired distance thereof, and also provided with an outwardprojec tion on one side of the slot, the said outward projectionprovided on its under side with a groove, and a locking device engagingsaid groove, said locking device adapted to work through the slot of therevoluble member, and also adapted to be freely removed when therevoluble member is disconnected and raised upwardly from the hub, thehead of said locking device adapted to engage the longitudinal groove ofthe spindle and lock the revoluble member to the spindle under oneadjustment of said locking device, and thereby prevent inde pendentrotation of the spindle in said revoluble member, and under anotheradjustment of said locking device to disengage the locking head from thegroove of the spindle and thereby unlock the revoluble member from thespindle and engage the engaging means of the hub, to thereby lock therevoluble member to the hub, one of said adjustments permitting of thespindle rotating without raising or lowering the same, and the other ofsaid adjustments permitting of the vertical adjustments of the spindle.

7. The combination of a hub having a plain or unthreaded bore, athreaded spindle provided with a longitudinal groove, an interiorlythreaded revoluble member on the hub and detachably connected thereto,and through which revoluble member the spindle passes and has threadedengagement therewith, said revoluble member provided with a slotextending a desired distance thereof, and also provided with an outwardprojection on one side of the slot, said outward projection provided onits under side with a groove, and locking means consisting of a lockinghead, an intermediate portion and a handle portion, said locking headadapted to work through the slot of the revoluble member, and saidintermediate member confined in the groove on the under side of theoutward projection and between said outward projection and the hub, topermit of the free removal of the locking means when the revolublemember is disconnected and raised upwardly from the hub, the head ofsaid locking means adapted to engage the longitudinal groove of thespindle and lock the revoluble member to the spindle under oneadjustment of said locking means, and thereby prevent independentrotation of the spindle in said revoluble member, and under anotheradjustment of said locking means to disengage the locking head from thegroove of the spindle and thereby unlock the rev oluble member from thespindle and engage the engaging means of the hub, to thereby lock therevoluble member to the hub, one of said adjustments permitting of thespindle rotating without raising or lowering the same, and the other ofsaid adjustments permitting of the vertical adjustment of the spindle.

8. A chair iron, comprising a hub portion having a vertically extendingbore, a threaded spindle extending into the bore of the hub, a memberthreaded on the spin dle and revolubly mounted on the hub portion, and alocking means carried by the threaded member for locking the threadedmember to the spindle under one adjustment and for locking said threadedmember to the hub portion under another adjustment, said locking meansbeing interposed between the threaded member and the hub portion andheld in operative position by the engagement of said threaded memberwith said hub portion.

9. A locking means for an adjustable chair iron, having a hub portionand a grooved spindle, comprising a revoluble member provided with abore through which the chair spindle is adapted to extend, saidrevoluble member provided with a socket and a locking dog engaging insaid socket the said spindle is adapted to extend, said revoluble memberprovided with a socket and a locking dog engaging in said socket,whereby the dog is removably secured in said socket and pivotallyconnected to the revoluble member, said dog adapted to be moved to aposition in verticalalinement with thebore of said revoluble member, to

lock said member to the spindle, and said dog adapted to be swungoutward from its vertically alined position, to lock said memher to thehub.

In testimony whereof I afiiX my signa ture'in presenceof two witnesses.

ARTHUR L. MORSELL.

WVitnesses KATHARINE HOLT, CLARA V. MUEHHLBAoi-I.

popies of this patent may be obtained for five cents each, by addressingthe Commissioner of Batman.

Washington, D. G.

